Welcome to our dedicated page for Masimo SEC filings (Ticker: MASI), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
The Masimo Corporation (MASI) SEC filings page on Stock Titan provides access to the company e2 80 99s regulatory disclosures as filed with the U.S. Securities and Exchange Commission. Masimo, a Delaware corporation and global medical technology company, reports under Commission File Number 001-33642. Its filings offer detailed insight into financial performance, corporate actions, and material events related to its healthcare-focused monitoring technologies and related operations.
Recent Form 8-K filings document key developments, such as quarterly financial results, guidance updates, and significant transactions. For example, Masimo filed a Form 8-K on November 4, 2025, furnishing a press release that reported third quarter 2025 financial results for its continuing healthcare operations and provided updated full-year 2025 guidance. Earlier, on August 5, 2025, the company filed a Form 8-K to furnish second quarter 2025 results and supplemental financial information.
Masimo e2 80 99s filings also record corporate events beyond earnings. A Form 8-K dated September 23, 2025 describes the completion of the sale of its consumer audio business, Sound United, to Harman International Industries, Incorporated, including the transfer of Masimo e2 80 99s equity interests in Viper Holdings Corporation and related cash consideration. Another Form 8-K filed on August 19, 2025 notes the resignation of a board member, while additional 8-Ks provide unaudited pro forma financial information following the Sound United transaction.
Within these filings, Masimo explains its use of non-GAAP financial measures, outlining adjustments for items such as acquisition-related amortization, business transition and related costs, litigation-related expenses and settlements, realized and unrealized gains or losses, financing-related adjustments, and tax impacts. Investors reviewing this page can use the underlying documents alongside Stock Titan e2 80 99s AI-powered summaries to understand Masimo e2 80 99s reported GAAP and non-GAAP results, the impact of significant transactions, and disclosures about ongoing Apple-related litigation expenses. The filings archive is a primary source for Masimo e2 80 99s official, time-stamped communications with regulators and the market.
Masimo Corporation furnished an 8‑K announcing it issued a press release with financial results for the quarter ended September 27, 2025, and provided a supplemental investor presentation. The press release (Exhibit 99.1) and supplemental materials (Exhibit 99.2) are furnished under Items 2.02 and 7.01 and are not deemed “filed” for Section 18 liability or incorporated by reference unless expressly stated.
The CFO planned to review third‑quarter 2025 results and an updated outlook for the remainder of fiscal 2025 on a conference call scheduled for November 4, 2025.
Masimo Corporation (MASI) insider sale notice: This Form 144 shows that 25,061 shares of Masimo common stock are proposed to be sold via Charles Schwab & Co., Inc. on 09/29/2025 with an aggregate market value of $3,553,637. The shares were acquired and paid on 09/29/2025 through an employee stock option exercise using a broker cashless exercise. The filing reports total shares outstanding of 54,324,812. The seller, identified in prior sales as Bilal Muhsin, sold 25,000 shares on 09/23/2025 for $3,518,983 and 50,000 shares on 09/26/2025 for $7,093,910. By combining the prior sales and the proposed sale, the filing documents insider dispositions totaling 100,061 shares during late September 2025. The filer certifies no undisclosed material adverse information and includes the standard Rule 144 representations.
Masimo Corporation filed an amendment to a prior current report to add unaudited pro forma financial information related to the completed sale of its consumer audio business to Harman International Industries. The amendment includes a pro forma condensed consolidated balance sheet as of June 28, 2025 and pro forma condensed consolidated statements of operations for the fiscal years ended December 28, 2024, December 30, 2023 and December 31, 2022, along with related notes.
These pro forma statements show how Masimo’s historical financials would look after applying the disposition adjustments and other transaction adjustments tied to the divestiture, helping readers understand the ongoing profile of the company after exiting the consumer audio business.
Form 144 notice for MASIMO CORP (MASI) indicates a proposed sale of 50,000 common shares acquired and to be sold on 09/26/2025 following an employee stock option exercise. The broker listed is Charles Schwab & Co., Inc. with an aggregate market value of $7,093,910.00 and the issuer's shares outstanding reported as 54,324,812. The filing shows a prior sale by the same person on 09/23/2025 of 25,000 shares for gross proceeds of $3,518,983.00. The filer certifies they are unaware of undisclosed material adverse information.
Tripodi Blair, Chief Operating Officer, Consumer Division of Masimo Corporation (MASI), reported transactions on Form 4 dated 09/23/2025. On that date 15,000 restricted stock units (granted March 1, 2024) were treated as acquired/settled using a $142.13 per-share price, and 8,078 shares were withheld to satisfy tax withholding. After these transactions the filing shows beneficial ownership figures of 21,896 and 13,818 shares for the reported classes. The filing states the RSUs fully accelerated on 09/23/2025 because Mr. Tripodi resigned for "good reason" in connection with the Company’s sale of its consumer audio business.
Form 144 filed for MASIMO CORPORATION (MASI): An individual proposes selling 25,000 common shares acquired the same day via an employee stock option exercise. The filing lists an aggregate market value of $3,518,983.00 and identifies Charles Schwab & Co., Inc. as the broker. The planned sale date is 09/23/2025 on NASDAQ.
The filing states the payment was handled by the broker as a cashless exercise. The filer reports no securities sold in the past three months and affirms they are not aware of undisclosed material adverse information about the issuer.
Form 144 filed for MASIMO CORPORATION (MASI): An individual proposes selling 25,000 common shares acquired the same day via an employee stock option exercise. The filing lists an aggregate market value of $3,518,983.00 and identifies Charles Schwab & Co., Inc. as the broker. The planned sale date is 09/23/2025 on NASDAQ.
The filing states the payment was handled by the broker as a cashless exercise. The filer reports no securities sold in the past three months and affirms they are not aware of undisclosed material adverse information about the issuer.
Form 144 filed for MASIMO CORPORATION (MASI): An individual proposes selling 25,000 common shares acquired the same day via an employee stock option exercise. The filing lists an aggregate market value of $3,518,983.00 and identifies Charles Schwab & Co., Inc. as the broker. The planned sale date is 09/23/2025 on NASDAQ.
The filing states the payment was handled by the broker as a cashless exercise. The filer reports no securities sold in the past three months and affirms they are not aware of undisclosed material adverse information about the issuer.
Form 144 filed for MASIMO CORPORATION (MASI): An individual proposes selling 25,000 common shares acquired the same day via an employee stock option exercise. The filing lists an aggregate market value of $3,518,983.00 and identifies Charles Schwab & Co., Inc. as the broker. The planned sale date is 09/23/2025 on NASDAQ.
The filing states the payment was handled by the broker as a cashless exercise. The filer reports no securities sold in the past three months and affirms they are not aware of undisclosed material adverse information about the issuer.
Masimo Corporation has completed the sale of its consumer audio business, Sound United, to Harman International Industries. The transaction was carried out through the sale of all equity interests in Viper Holdings Corporation, which owns and operates Sound United.
The deal was based on an aggregate purchase price of $350,000,000 in cash, subject to certain adjustments. At closing on September 23, 2025, Masimo received approximately $328,000,000 in cash, which remains subject to post-closing adjustments under the Stock Purchase Agreement. Masimo also issued a press release announcing the closing.
Masimo Corporation has completed the sale of its consumer audio business, Sound United, to Harman International Industries. The transaction was carried out through the sale of all equity interests in Viper Holdings Corporation, which owns and operates Sound United.
The deal was based on an aggregate purchase price of $350,000,000 in cash, subject to certain adjustments. At closing on September 23, 2025, Masimo received approximately $328,000,000 in cash, which remains subject to post-closing adjustments under the Stock Purchase Agreement. Masimo also issued a press release announcing the closing.
Masimo Corporation has completed the sale of its consumer audio business, Sound United, to Harman International Industries. The transaction was carried out through the sale of all equity interests in Viper Holdings Corporation, which owns and operates Sound United.
The deal was based on an aggregate purchase price of $350,000,000 in cash, subject to certain adjustments. At closing on September 23, 2025, Masimo received approximately $328,000,000 in cash, which remains subject to post-closing adjustments under the Stock Purchase Agreement. Masimo also issued a press release announcing the closing.
Masimo Corporation has completed the sale of its consumer audio business, Sound United, to Harman International Industries. The transaction was carried out through the sale of all equity interests in Viper Holdings Corporation, which owns and operates Sound United.
The deal was based on an aggregate purchase price of $350,000,000 in cash, subject to certain adjustments. At closing on September 23, 2025, Masimo received approximately $328,000,000 in cash, which remains subject to post-closing adjustments under the Stock Purchase Agreement. Masimo also issued a press release announcing the closing.
Charles Dadswell, a director of Masimo Corporation (MASI), reported equity awards granted on August 18, 2025. The filing shows 2,273 restricted stock units (RSUs), each representing a contingent right to one share, and a non-qualified stock option covering 5,104 shares with an exercise price of $153.93. The RSUs vest ratably over four years with 25% vesting on each anniversary of the grant date. The option vests over five years with 20% vesting on each anniversary and is exercisable as it vests.
The Form 4 was filed individually and signed by an attorney-in-fact on behalf of the reporting person. All information in this summary is taken directly from the Form 4 content.
Masimo Corporation director files initial ownership report showing no holdings
Masimo Corporation director Charles Dadswell filed an initial Form 3 reporting his relationship to the company as a director. The filing states that no non-derivative or derivative securities of Masimo Corporation are beneficially owned, as noted in the remarks section, which specifies that no securities are beneficially owned.
Politan Capital and affiliated entities disclosed a Form 4 reporting an internal distribution of Masimo Corporation (MASI) shares. On 08/29/2025 the Reporting Persons recorded a Code J(1) transaction showing 126,888 shares disposed at a reported price of $0, with an explanatory footnote stating those shares were distributed to a limited partner and were not sold in the open market. After the reported distribution, the Reporting Persons collectively beneficially owned 4,589,648 shares on an indirect basis. The filing is joint by Politan Capital Management LP, its GP entities, and Quentin Koffey, who is identified as a director and managing partner; signatures are dated 08/29/2025.